Clay County, Illinois, United States

Last updated: 8:22 PM CDT  ·  Refresh
25°C
Feels like 28°
Rain
▲ 32°  /  ▼ 20°
Wind
5 mph WSW
Humidity
84%
Dew Point
22°
Pressure
29.42 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
80%
Sunrise
5:34 AM
Sunset
8:22 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Clay County is currently rain at 25°C. Precipitation is likely — peak probability 85% around 8 PM. Atmospheric instability is elevated (CAPE up to 1319 J/kg) — isolated convective development possible. Sunrise: 5:34AM · Sunset: 8:22PM.

Alerts

No active alerts for this location.
58 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
85%
9 PM
24°
75%
10 PM
23°
62%
11 PM
23°
47%
12 AM
23°
46%
1 AM
22°
34%
2 AM
22°
35%
3 AM
21°
40%
4 AM
21°
39%
5 AM
20°
40%
6 AM
20°
31%
7 AM
21°
32%
8 AM
22°
32%
9 AM
23°
30%
10 AM
24°
30%
11 AM
26°
33%
12 PM
27°
38%
1 PM
28°
41%
2 PM
28°
42%
3 PM
28°
42%
4 PM
28°
43%
5 PM
28°
43%
6 PM
27°
43%
7 PM
27°
35%
7-Day Forecast
Tonight
32° 20°
Rain, 85% chance.
Sun
28° 20°
Partly Cloudy with a 42% chance of rain.
Mon
28° 19°
Partly Cloudy with a 40% chance of rain.
Tue
28° 17°
Clear.
Wed
29° 19°
Clear.
Thu
29° 22°
Rain, 77% chance.
Fri
29° 19°
Rain, 90% chance.
TimeTempConditionsPrecipWindHumidity
Now 25° Rain 85% 5 mph WSW 84%
9 PM 24° Overcast 75% 4 mph S 91%
10 PM 23° Mostly Cloudy 62% 5 mph SSW 92%
11 PM 23° Mostly Cloudy 47% 6 mph WSW 93%
12 AM 23° Mostly Cloudy 46% 6 mph W 94%
1 AM 22° Mostly Cloudy 34% 6 mph W 96%
2 AM 22° Mostly Cloudy 35% 5 mph W 96%
3 AM 21° Partly Cloudy 40% 4 mph W 96%
4 AM 21° Partly Cloudy 39% 4 mph W 96%
5 AM 20° Mostly Cloudy 40% 4 mph WNW 96%
6 AM 20° Mostly Cloudy 31% 4 mph NW 96%
7 AM 21° Overcast 32% 5 mph NW 93%
8 AM 22° Mostly Cloudy 32% 6 mph NNW 89%
9 AM 23° Mostly Cloudy 30% 6 mph NNW 84%
10 AM 24° Partly Cloudy 30% 6 mph NNW 80%
11 AM 26° Partly Cloudy 33% 6 mph NNW 77%
12 PM 27° Partly Cloudy 38% 6 mph NNW 73%
1 PM 28° Partly Cloudy 41% 6 mph NNW 71%
2 PM 28° Partly Cloudy 42% 7 mph NNW 71%
3 PM 28° Partly Cloudy 42% 7 mph NNW 71%
4 PM 28° Partly Cloudy 43% 7 mph NNW 72%
5 PM 28° Rain 43% 7 mph NNW 75%
6 PM 27° Rain 43% 7 mph NNW 77%
7 PM 27° Drizzle 35% 7 mph NNW 80%
15-Day Forecast
Today
7/4
Rain
85%
20°
32°
Sun
7/5
Partly Cloudy
42%
20°
28°
Mon
7/6
Partly Cloudy
40%
19°
28°
Tue
7/7
Clear
7%
17°
28°
Wed
7/8
Clear
16%
19°
29°
Thu
7/9
Rain
77%
22°
29°
Fri
7/10
Rain
90%
19°
29°
Sat
7/11
Clear
17%
19°
27°
Sun
7/12
Drizzle
43%
17°
26°
Mon
7/13
Drizzle
44%
15°
28°
Tue
7/14
Clear
21%
19°
29°
Wed
7/15
Drizzle
60%
20°
30°
Thu
7/16
Clear
60%
20°
29°
Fri
7/17
Drizzle
60%
19°
29°
Sat
7/18
Drizzle
60%
21°
29°
58
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
58 AQI 12.8 µg/m³
O3
Ground-level ozone
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 58 Moderate 36 58
Mon 43 Good 32 43
Tue 54 Moderate 40 54
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sat Jul 4, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE888 J/kg
MLCAPE1553 J/kg
MUCAPE1999 J/kg
SBCIN-106 J/kg
MLCIN0 J/kg
Lifted Index-3.1
Kinematics
0–6 km Shear10 kt
0–1 km Shear9 kt
Eff. Shear7 kt
0–1 km SRH-26
0–3 km SRH-53
Eff. SRH-53
Storm Motion233° @ 22 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.3
Thermo & Levels
PWAT2.09 in
0–3 km LR5.5 °C/km
700–500 LR5.4 °C/km
Total Totals45.7
LCL957 hPa
LFC762 hPa
EL203 hPa
Freezing Lvl13,891 ft